Found this in the Oil Filter

[tonythetiger]

DaveBBoxster - From my research and experience on this forum, its from the vario-cam adjuster, not sure what it takes to fix that or if its terminal. I would seek the advice of an engine surgeon.
The brownish particles are from the chain rail guides of the vario-cam system. A few are normal, I had some in my oil a couple of changes ago and havent seen any since.

[Homeoboxter]

If it`s the O-ring from the adjuster, it`s not servicable, at least not on mine, I just cut one apart. But that`s a 2.5 5-chain motor, as I said in your other thread. I agrree with Tony about the brown plastic chips, they are coming from the rails. That needs attention too. In my car, those rails completely wore off, broke apart, the chain damaged the adjuster and the broken pieces caused the timing to jump.